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Table 1 Mean Dice’s coefficient and Hausdorff distance values for multiple atlas libraries of clinical target volumes

From: Atlas-based auto-segmentation for postoperative radiotherapy planning in endometrial and cervical cancers

 

Size of atlas library

20

40

60

ABAS-CTV

 DC (95% CI)

0.75 (0.73–0.77)

0.75 (0.72–0.78)

0.79 (0.77–0.80)

p-value

ref.

0.656

0.012 (0.002++)

 HD (95% CI)

21.3 (18.8–24.0)

23.8 (20.9–26.9)

19.7 (17.8–22.0)

p-value

ref.

0.137

0.002 (0.012++)

ABASc-CTV

 DC (95% CI)

0.82 (0.80–0.82)

0.83 (0.81–0.84)

0.84 (0.82–0.85)

p-value

ref.

0.555

0.010 (0.015++)

p-value*

0.001

0.009

0.004

 HD (95% CI)

17.4 (15.1–20.1)

17.1 (15.0–19.1)

15.6 (14.2–17.1)

p-value

ref.

0.046

0.200 (0.001++)

p-value*

0.005

0.002

0.014

  1. Abbreviations: ABAS atlas-based auto-segmentation alone, ABASc manually corrected ABAS, CTV clinical target volume, DC Dice’s coefficient, HD Hausdorff distance, CI confidence interval
  2. * Comparison between ABAS and ABASc
  3. ++ Comparison between atlas size 40 and 60